Home / 21,237.50-31,860.09-8,750.58

Finding the Fourth Proportional to 21,237.50, 31,860.09 and 8,750.58

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Solution

The fourth proportional to 21,237.50, 31,860.09 and 8,750.58 is: 13,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.50 : 31,860.09 = 8,750.58 : x
  2. Step 2: Convert to fraction form
    21,237.50/31,860.09 = 8,750.58/x
  3. Step 3: Cross multiply
    21,237.50x = 31,860.09 × 8,750.58
  4. Step 4: Simplify right side
    21,237.50x = 278,794,288.23
  5. Step 5: Solve for x
    x = 278,794,288.23/21,237.50
  6. Step 6: Final answer
    x = 13,127.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.